package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.exception.CustException;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmUserDTO;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.model.wemedia.vos.WmUserVO;
import com.heima.utils.common.AppJwtUtil;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmUserService;
import io.seata.common.util.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Service
public class WmUserServiceImpl extends ServiceImpl<WmUserMapper, WmUser> implements WmUserService {
    @Override
    public ResponseResult login(WmUserDTO dto) {
        //1.效验参数  用户名 密码 不能为空
        String name = dto.getName();
        String password = dto.getPassword();
        if (StringUtils.isBlank(name) || StringUtils.isBlank(password)) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID, "用户名或密码不能为空");
        }
        //2.根据用户名查询用户信息
        WmUser wmUser = this.getOne(Wrappers.<WmUser>lambdaQuery().eq(WmUser::getName, name));
        if (wmUser == null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST, "用户不存在");
        }
        //3.判断输入的密码 是否和 数据库中的一致
        String inputPwd = DigestUtils.md5DigestAsHex((dto.getPassword() + wmUser.getSalt()).getBytes());
        if (!inputPwd.equals(wmUser.getPassword())) {
            CustException.cust(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
        }
        //4.判断user状态  9 正常
        Integer status = wmUser.getStatus();
        if (status.intValue() != 9) {
            CustException.cust(AppHttpCodeEnum.LOGIN_STATUS_ERROR);
        }
        //5.修改最近登录时间
        wmUser.setLoginTime(new Date());
        this.updateById(wmUser);
        //6.颁发凭证 AppJwtUtil.getToken(user)
        String token = AppJwtUtil.getToken(Long.valueOf(wmUser.getId()));
        //7.封装返回结果 map { user: token: }
        WmUserVO userVO = new WmUserVO();
        BeanUtils.copyProperties(wmUser, userVO);

        Map result = new HashMap<>();
        result.put("user", userVO);
        result.put("token", token);

        return ResponseResult.okResult(result);
    }
}